500 Days of Kristin, Day 393: Kristin's Favorite Real Housewife 10.65K Allie Jones 02/21/16 07:45PM Filed to: 500 days of kristin 500 days of kristin kristin cavallari yolanda foster Former reality TV star Kristin Cavallari only follows one reality TV housewife on Instagram, and that is Ms. Yolanda Foster of Beverly Hills. Makes total sense to me.This has been 500 Days of Kristin.[Photo via Getty]